The definition of a la carte is a list of items on a menu which are priced separately.(adjective)
A baked potato on a menu is an example of an a la carte item.
A la carte is defined as ordering individual side dishes instead of an entree selection.(adverb)
Ordering chips and a pickle instead of getting a whole meal is an example of ordering a la carte.
See a la carte in Webster's New World College Dictionary
Origin: Fr à la carte, lit., by the bill of fare
See a la carte in American Heritage Dictionary 4
also a la carteadverb & adj.
Origin: : à, by
Origin: + la, the
Origin: + carte, menu.